Wesley is making a patio from stones of two sizes, 5 inches wide and 10 inches wide. He wants to begin and end his pattern with a 10-inch stone so there will be one more of the 10-inch stone than of the 5-inch stones. His patio will be 145 inches wide. Wesley will need how many 10-inches stones for one row?

The first stone will be 10-in wide

The last stone will be 10-in wide

The stones in the middle will be alternating between 5-in and 10-in stones, making a total of 15-in

Total width = 145-in

Width after placing first and last stones = 145 - 20 = 125-in

Number of 15-in patterns incorporated in 125-in:

125/15 = 8.33

Therefore, he will place 8 10-inch stones within and 9 5-inch stones within the patter.

The total 10-inch stones used = 8 + 2 = 10